Retirement Plans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2015	Mar. 01, 2014	Mar. 02, 2013
Defined Contribution Plans
Employer match of employee contributions up to 3% of pretax annual compensation to 401 (k) defined contribution plan (as a percent)	100.00%
Percentage of participant's pretax annual compensation matched 100% by employer	3.00%
Employer match of employee contributions of additional 2% of pretax annual compensation to 401 (k) defined contribution plan (as a percent)	50.00%
Percentage of participant's pretax annual compensation matched 50% by employer	2.00%
Total expense recognized for 401(k) defined contribution plans	$ 60,552	$ 57,857	$ 56,480
Vesting period	5 years
Expense recognized for supplemental retirement defined contribution plan	8,748	11,531	7,469
Estimated amounts that will be amortized from accumulated other comprehensive loss into net periodic pension expense
Net actuarial loss	3,913
Prior service cost	67
Asset allocations
Total (as a percent)	100.00%	100.00%
Target allocation of plan assets
Total (as a percent)	100.00%
Equity Securities
Asset allocations
Total (as a percent)	53.00%	62.00%
U.S. equities
Target allocation of plan assets
Total (as a percent)	39.00%
International equity
Target allocation of plan assets
Total (as a percent)	13.00%
Fixed Income
Asset allocations
Total (as a percent)	47.00%	38.00%
Target allocation of plan assets
Total (as a percent)	48.00%
Defined Benefit Pension Plan
Net periodic pension expense
Service cost	2,543	3,341	2,908
Interest cost	6,474	6,120	6,128
Expected return on plan assets	(7,339)	(6,738)	(6,719)
Amortization of unrecognized prior service cost	240	240	240
Amortization of unrecognized net loss (gain)	2,392	4,935	3,926
Net pension expense	4,310	7,898	6,483
Other changes recognized in other comprehensive loss:
Unrecognized net (gain) loss arising during period	17,190	(18,860)	12,901
Amortization of unrecognized prior service cost	(240)	(240)	(240)
Amortization of unrecognized net (loss) gain	(2,392)	(4,935)	(3,926)
Net amount recognized in other comprehensive loss	14,558	(24,035)	8,735
Net amount recognized in pension expense and other comprehensive loss	18,868	(16,137)	15,218
Change in benefit obligations:
Benefit obligation at end of prior year	148,596	158,522
Service cost	2,543	3,341	2,908
Interest cost	6,474	6,120	6,128
Distributions	(12,190)	(7,677)
Actuarial (gain) loss	21,833	(11,710)
Benefit obligation at end of year	167,256	148,596	158,522
Change in plan assets:
Fair value of plan assets at beginning of year	128,984	114,773
Employer contributions	1,159	8,000	5,583
Actual return on plan assets	11,981	13,888
Distributions (including expenses paid by the plan)	(12,190)	(7,677)
Fair value of plan assets at end of year	129,934	128,984	114,773
Funded status	(37,322)	(19,612)
Amounts recognized in consolidated balance sheets consisted of:
Accrued pension liability	(37,322)	(19,612)
Net amount recognized	(37,322)	(19,612)
Amounts recognized in accumulated other comprehensive loss consist of:
Net actuarial loss	(50,146)	(35,348)
Prior service cost	(67)	(307)
Amount recognized	(50,213)	(35,655)
Estimated amounts that will be amortized from accumulated other comprehensive loss into net periodic pension expense
Accumulated benefit obligation	167,256	148,596
Significant actuarial assumptions used for all defined benefit plans to determine the benefit obligation
Discount rate (as a percent)	4.00%	4.50%	4.00%
Rate of increase in future compensation levels (as a percent)		4.50%	4.50%
Expected long term rate of return on plan assets	6.50%	7.75%	7.75%
Weighted average assumptions used to determine net cost
Discount rate (as a percent)	4.50%	4.00%	4.50%
Rate of increase in future compensation levels (as a percent)		4.50%	5.00%
Expected long-term rate of return on plan assets (as a percent)	7.75%	7.75%	7.75%
Defined benefit plans estimated future employer contributions
Expected employer contribution during next fiscal year	0
Nonqualified Executive Retirement Plan
Defined Benefit Plans
Defined benefit plans, annual benefit payment period	15 years
Net periodic pension expense
Interest cost	542	541	616
Amortization of unrecognized net loss (gain)	894	(351)	866
Net pension expense	1,436	190	1,482
Other changes recognized in other comprehensive loss:
Unrecognized net (gain) loss arising during period	894	(351)	866
Amortization of unrecognized net (loss) gain	(894)	351	(866)
Net amount recognized in pension expense and other comprehensive loss	1,436	190	1,482
Change in benefit obligations:
Benefit obligation at end of prior year	12,865	14,332
Interest cost	542	541	616
Distributions	(1,616)	(1,657)
Actuarial (gain) loss	894	(351)
Benefit obligation at end of year	12,685	12,865	14,332
Change in plan assets:
Employer contributions	1,616	1,655
Distributions (including expenses paid by the plan)	(1,616)	(1,655)
Funded status	(12,685)	(12,865)
Amounts recognized in consolidated balance sheets consisted of:
Accrued pension liability	(12,685)	(12,865)
Net amount recognized	(12,685)	(12,865)
Estimated amounts that will be amortized from accumulated other comprehensive loss into net periodic pension expense
Accumulated benefit obligation	12,685	12,865
Significant actuarial assumptions used for all defined benefit plans to determine the benefit obligation
Discount rate (as a percent)	4.00%	4.50%	4.00%
Weighted average assumptions used to determine net cost
Discount rate (as a percent)	4.50%	4.00%	4.50%
Defined benefit plans estimated future employer contributions
Expected employer contribution during next fiscal year	$ 1,644